Korean celadon ewer???

HI,I have this ewer that has some asian characters on it which i believe is korean celadon from the 12th century. i am not sure if it is real or a reproduction/fake. i have included some pictures in case you can help me verify this one way or the other. i am also willing to send this piece to you if need be and possibly consign it to you for sale if it is worth a significant amount. i would appreciate any information you can give me about concerning this piece or if you can direct me to someone who can. thanks in advance rob.

Looks like a modern version of an antique Korean Wine Pot, the antique versions would not have stamped markings and there would be three spur marks on base where it was raised off the bottom of the kiln by pebbles. Still pieces like this really require a physical appraisal, which is beyond the scope of this forum.